Trebuchet trials, magic paper, lift your parent? Explore the concept of levers, how they work, and how they’re used. STEM Challenge: build a “Paint Paddle Catapult” to demonstrate the concept and function of this type of lever. Episode 202.
The Great Lakes only national marine sanctuary brings underwater history up close. Whether you’re in a glass-bottomed boat, looking down from a kayak, or diving underwater, the shipwrecks at the Thunder Bay National Marine Sanctuary give you a haunting look at the past.